Anti-electric shock safety socket

Abstract

The invention relates to an anti-electric shock safety socket which comprises a socket shell and an internal support, a socket sliding block is arranged in the internal support, a power connection plug bush is arranged on the lower portion of the socket sliding block, a liftable ejector rod assembly is arranged on the side portion of the power connection plug bush, and the ejector rod assembly is arranged below the socket sliding block. The socket sliding block can move up and down in the translation of the socket sliding block; an isolation assembly and a switch elastic sheet are arranged below the ejector rod assembly; the ejector rod assembly comprises an ejector rod sliding sleeve, an ejector rod, an ejector rod spring and a limiting ring, the ejector rod sliding sleeve is pressed on the lower portion of the socket sliding block in a limiting mode and movably connected to the ejector rod in a sleeving mode, and the isolation assembly comprises a switch isolation pad protruding towards the bottom end of the ejector rod in an arc mode. The bottom end of the push rod can abut against the switch isolation pad. The anti-electric shock application of the safety socket can be effectively guaranteed, and the risk that an existing safety structure is mechanically damaged or stable and reliable power-on cannot be guaranteed is avoided.

Description

Technical Field

[0001] This application relates to the field of socket equipment technology, and more specifically, to a safety socket that is protected against electric shock. Background Technology

[0002] In existing socket structures, to ensure safe use, a shielding plate is usually installed inside the safety socket, or the socket insert is placed deep inside the socket housing to reduce safety risks.

[0003] However, the shielding design poses a risk of mechanical damage during long-term use, and placing the socket socket too deep may result in loose connections, making it difficult to guarantee a stable and reliable power supply. Summary of the Invention

[0004] The purpose of this application is to provide a safety socket that is protected against electric shock, which can effectively ensure the application of the safety socket against electric shock and avoid the risk of mechanical damage or inability to guarantee stable and reliable power supply in existing safety structures.

[0005] To achieve the above objectives, the present invention provides an electric shock-proof safety socket, including a socket housing and an internal support, wherein a movable socket slider is provided in the internal support, and a return spring is provided between the socket slider and the internal support. The lower part of the socket slider is provided with a power connection sleeve, which is fixedly installed in the internal bracket. The side of the power connection sleeve is provided with a liftable top rod assembly, which is located below the socket slider and can move up and down during the translation of the socket slider. Below the top rod assembly, there is an isolation component and a switch spring. At the bottom of the power-connecting socket, there is a power-connecting copper nail. The power-connecting copper nail extends outward from the internal bracket. The root of the switch spring is riveted to the power-connecting copper nail, and the end of the spring is positioned above the power-connecting PCB board. The push rod assembly includes a push rod sleeve, a push rod, a push rod spring, and a limiting ring. The push rod sleeve is press-fitted into the lower part of the socket slider and movably sleeved on the push rod. The limiting ring is integrally connected to the push rod. The push rod spring is disposed between the push rod sleeve and the limiting ring. The isolation assembly includes a switch isolation pad that protrudes arcuately toward the bottom end of the push rod, so that the bottom end of the push rod abuts against the switch isolation pad.

[0006] In an optional embodiment, the socket slider includes a top guide wall with an inclined surface, the top guide wall being able to abut against an inserted plug prong and guide the socket slider to translate as the plug prong is inserted. The socket slider also includes a bottom guide wall with an inclined surface, and the top rod sleeve can be pressed down and moved along the bottom guide wall during the translation of the socket slider; The top guide wall and the bottom guide wall have the same inclination direction, and the top guide wall is inclined from top to bottom and outward relative to the insertion direction of the plug prongs. The socket slider is provided with a clearance groove for avoiding the top rod. The clearance groove includes a vertical cut groove opened in the center of the bottom guide wall. The top of the top rod is inserted into the top of the internal bracket. The bracket top cover of the internal bracket is provided with a limiting hole for the top rod to be inserted.

[0007] In an optional embodiment, the electric shock safety socket includes two-hole sockets, the socket slider includes two-hole sliders with corresponding configurations, the two-hole sliders include a connecting plate, the top guide wall and the bottom guide wall include two sets of configurations on both sides of the connecting plate, respectively corresponding to the neutral wire and the live wire, and the two ends of the return spring abut against the connecting plate and the internal support.

[0008] In an optional embodiment, the electric shock safety socket further includes a three-hole socket, the three-hole socket includes a corresponding three-hole slider, the top guide wall includes a set corresponding to the ground wire plug, the bottom guide wall includes two sets corresponding to the neutral wire and the live wire respectively, and the two ends of the return spring abut against the three-hole slider and the internal bracket.

[0009] In an optional embodiment, the push rod assembly includes two sets of push rod assemblies, namely a live wire push rod assembly and a neutral wire push rod assembly; The power connection socket includes two sets of power connection sockets and a ground wire power connection socket. The two sets of power connection sockets respectively include a live wire power connection socket and a neutral wire power connection socket. The switch spring includes two sets of switch springs, including a live wire switch spring and a neutral wire switch spring respectively; The live wire connection socket, the live wire push rod assembly, and the live wire switch spring are correspondingly arranged. The neutral wire connection socket, the neutral wire push rod assembly, and the neutral wire switch spring are correspondingly arranged. A ground copper sheet is soldered onto the power connection PCB board. The ground copper sheet is riveted to the power connection copper nail on the ground wire connection socket.

[0010] In an optional embodiment, the power-connecting PCB board is provided with two live wire silver contacts, two neutral wire silver contacts, three live wire silver contacts, and three neutral wire silver contacts. The ends of the switch springs are respectively riveted to spring silver contacts, and the spring silver contacts are correspondingly set with different silver contacts on the power-connecting PCB board.

[0011] In an optional embodiment, the push rod sleeve is clearance-fitted with the push rod, and the top end of the push rod extends out of the push rod sleeve and is limited to pass through the clearance groove of the socket slider; The push rod sleeve includes an engineering step, the top end of the push rod spring abuts against the engineering step, and the bottom end abuts against the annular flat wall of the limiting ring.

[0012] In an optional embodiment, the internal support includes a support base shell, on which a through hole is provided for the insertion of the top rod, and the bottom end of the top rod extends outward from the through hole; The bottom end of the top rod includes an abutting arc surface, which abuts against the top of the switch isolation pad. The switch isolation pad includes an elastic gasket made of silicone rubber, and an arc-shaped groove is provided on the bottom wall of the bracket base. The isolation assembly also includes a switch isolation frame made of fireproof material disposed at the lower part of the internal support, and the top of the switch isolation frame is provided with an arc-shaped protruding top edge; The switch isolation pad is press-fitted between the arc-shaped groove and the top edge of the arc-shaped protrusion.

[0013] In an optional embodiment, the switch isolation frame is disposed between the internal support and the power-connecting PCB board, and the end of the switch spring is disposed inside the switch isolation frame. The switch isolation frame includes multiple compartments, with the end of each switch spring corresponding to a different compartment. Each compartment has a raised baffle at its bottom, which can be tightly fitted to the power-connecting PCB board to isolate each switch.

[0014] In an optional embodiment, the socket housing includes a front cover and a rear cover, a front waterproof pad is provided between the front cover and the internal support, and a rear waterproof pad is provided between the rear cover and the power-connecting PCB board. The rear cover of the housing is provided with a raised shell, and a wiring sleeve for connecting an external power cord is provided inside the raised shell. The wiring sleeve is connected to the power-connecting PCB board. The raised shell is provided with a wiring port, and a safety cover is detachably connected to the wiring port.

[0015] The electric shock-proof safety socket of this invention can effectively realize the safety function of plug insertion to provide power and plug removal to cut off power. It avoids the problems of easy damage to traditional shielding plates and easy loose connection of deep sockets. The structure is stable, safe and reliable, and can extend the service life of the safety socket.

[0016] Other features and advantages of this application will be described in detail in the following detailed description section. Attached Figure Description

[0017] To more clearly illustrate the technical solutions of the embodiments of this application, the accompanying drawings used in the embodiments will be briefly introduced below. It should be understood that the following drawings only show some embodiments of this application and should not be regarded as a limitation of the scope. For those skilled in the art, other related drawings can be obtained based on these drawings without creative effort.

[0018] Figure 1 This is a schematic diagram of the split structure of the electric shock protection safety socket in this application; Figure 2 This is a schematic diagram of the split side view of the electric shock protection safety socket in this application; Figure 3 This is a cross-sectional view of the electric shock protection safety socket in this application after assembly.

[0019] icon: 1-Socket housing; 11-Front cover of housing; 12-Rear cover of housing; 13-Front waterproof gasket; 14-Rear waterproof gasket; 15-Protruding shell; 16-Connection port; 17-Safety cover; 2-Internal support; 21-Bottom shell of support; 22-Top cover of support; 23-Electrical connector sleeve; 24-Switch spring; 25-Electrical connector copper nail; 26-Arc-shaped groove; 27-Electrical connector clip; 3-Socket slider; 3a-Two-hole slider; 3b-Three-hole slider; 31-Return spring; 32-Top guide wall; 33-Bottom guide wall; 34-Allowing groove; 4-Push rod assembly; 41-Push rod sleeve; 42-Push rod; 43-Push rod spring; 44-Limiting ring; 45-Engineering step; 46-Abutting arc surface; 5-Isolation assembly; 51-Switch isolation pad; 52-Switch isolation bracket; 53-Arc-shaped raised top edge; 6-Power-connecting PCB board; 61-Ground copper sheet; 62-Terminal sleeve; 63-Screw. Detailed Implementation

[0020] To make the objectives, technical solutions, and advantages of the embodiments of this application clearer, the technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this application, and not all embodiments. The components of the embodiments of this application described and shown in the accompanying drawings can generally be arranged and designed in various different configurations.

[0021] In the description of this application, it should be noted that the terms "inner" and "outer," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, or the orientation or positional relationship commonly used when the product is in use. They are used only for the convenience of describing this application and for simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this application. Furthermore, the terms "first," "second," etc., are used only to distinguish descriptions and should not be construed as indicating or implying relative importance.

[0022] In the description of this application, it should also be noted that, unless otherwise expressly specified and limited, the terms "setup" and "connection" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this application based on the specific circumstances.

[0023] The electric shock protection safety socket in this application mainly improves the structure of the safety socket, which can effectively achieve the function of preventing electric shock, while protecting the switch spring and other related parts and ensuring normal power supply.

[0024] See Figure 1 and combined Figures 2-3 The electric shock safety socket of the present invention has a main structure including a socket housing 1 and an internal support 2 disposed in the socket housing 1.

[0025] The internal support 2 includes a support base shell 21 and a support top cover 22, which are mainly used to form the mounting base for most of the moving parts and electrical components.

[0026] The socket housing 1 includes a front cover 11 and a rear cover 12. The front cover 11 and the rear cover 12 are fastened together by ultrasonic welding, gluing, screws and sealing gaskets to form a sealed housing. It is mainly used to install the internal bracket 2, isolation component 5, switch spring 24, power connection PCB board 6 and wiring sleeve 62, etc.

[0027] From the perspective of ensuring sealing and safety, a front waterproof gasket 13 is provided between the front cover 11 of the housing and the bracket top cover 22 of the internal bracket 2. The front waterproof gasket 13 is installed on the bracket top cover 22 to prevent liquids and dust from entering the socket box. A rear waterproof gasket 14 is provided between the rear cover 12 of the housing and the power connection PCB board 6. The rear waterproof gasket 14 can effectively waterproof the socket and prevent liquids on the back of the socket from entering the socket through the wiring port 16.

[0028] The electric shock protection safety socket in this application, from the perspective of core functions, includes a mechanical transmission structure, a switch isolation structure, and an electrical connection structure. The insertion of the plug drives the linkage of the mechanical transmission structure within the internal support 2, ultimately achieving electrical connection. During the insertion of the plug into the safety socket, the user does not need to directly operate any switch, and the plug can automatically disconnect the power and restore the insulation isolation state after being pulled out, effectively preventing electric shock.

[0029] The mechanical transmission structure consists of a socket slider 3 made of insulating material and a push rod assembly 4. The socket slider 3 is slidably mounted in the internal support 2. A return spring 31 is provided between the socket slider 3 and the internal support 2. The return spring 31 is specifically in the form of a compression spring. In the natural state where no plug is inserted, the elastic force of the return spring 31 keeps the socket slider 3 in the outermost initial position.

[0030] The top cover 22 of the inner bracket 2 is provided with a prong hole for the plug prongs to enter. A power-connecting sleeve 23 is provided at the lower part of the socket slider. The power-connecting sleeve 23 is fixedly installed in the inner bracket 2. When the plug is inserted, under the action of the plug prongs, combined with the guide part on the socket slider 3, the socket slider 3 overcomes the elastic force of the return spring 31 and moves inward toward the center of the inner bracket 2, thus providing clearance for the plug prongs to insert downwards. This allows the plug prongs to engage with the power-connecting clip 27 of the power-connecting sleeve 23, achieving electrical connection between the plug prongs and the power-connecting sleeve 23. After the plug is removed, the socket slider 3, under the action of the return spring 31, is pushed to return to its initial outermost position.

[0031] The push rod assembly 4 has its own reset elasticity, is vertically and vertically arranged on the side of the power connection socket 23, and is also arranged below the socket slider 3, and can move up and down during the translation of the socket slider 3.

[0032] Specifically, in conjunction with the translation process of the socket slider 3 described above, while translating inward, the push rod assembly 4 can move downward under the linkage of the inward translation of the socket slider 3. The bottom of the push rod assembly 4 is provided with an isolation assembly 5 and a switch spring 24. The bottom of the power-connecting socket 23 is provided with a power-connecting copper nail 25. The power-connecting copper nail 25 extends downward and outward from the internal bracket 2. The root of the switch spring 24 is riveted to the power-connecting copper nail 25. The end of the spring is located above the power-connecting PCB board 6. The power-connecting socket 23, the switch spring 24, and the power-connecting PCB board 6 constitute an electrical connection structure.

[0033] When the push rod assembly 4 moves downward, it can press the switch isolation pad 51 of the isolation assembly 5 and the end of the spring of the switch spring 24. The switch spring 24 can bend downward elastically based on the root rivet point, pressing the spring silver contact on the end of the spring into contact with the silver contact of the power-connecting PCB board 6. Combined with the electrical connection state of the plug and the power-connecting socket 23, the circuit of the plug, the power-connecting socket 23, the switch spring 24 and the power-connecting PCB board 6 is connected.

[0034] After the socket slider 3 is moved and reset, the push rod assembly 4 can break free from the downward pressure of the socket slider 3 and perform a lifting action under its own elasticity. At the same time, under the reset elastic force of the switch isolation pad 51 and the switch spring 24, it can rebound upward at the bottom of the push rod assembly 4, thereby disconnecting the contact with the silver contacts on the power-connecting PCB board 6 and disconnecting the power supply. Furthermore, the upward rebound of the switch isolation pad 51 and the switch spring 24 can also lift the push rod assembly 4 to a certain extent, ensuring the elastic reset of the push rod assembly 4.

[0035] As a linkage component of the mechanical transmission structure, the push rod assembly 4 in this application includes a push rod sleeve 41, a push rod 42, a push rod spring 43, and a limiting ring 44. The push rod sleeve 41 is pressed and limited on the lower part of the socket slider and movably sleeved on the push rod 42. The limiting ring 44 is integrally connected to the push rod 42. The push rod spring 43 is disposed between the push rod sleeve 41 and the limiting ring 44.

[0036] The push rod sleeve 41 is made of wear-resistant material and has a circular design to increase smoothness and serve as an intermediate transition piece to transmit the downward pressure applied from the socket slider 3.

[0037] When the push rod 42 is subjected to downward pressure, it passes through the hole in the bracket bottom shell 21 and presses down the switch isolation pad 51 and the end of the switch spring 24, so that the silver contacts make contact and connect the power supply.

[0038] When the socket slider 3 moves inward, it can press the top rod sleeve 41 and make the bottom end of the top rod 42 extend outward from the internal bracket 2, pressing down the switch isolation pad 51 and the end of the spring piece. After the end of the spring piece is elastically bent, it presses the silver contact of the spring piece on the end of the spring piece into contact with the silver contact of the power-connecting PCB board 6, so as to realize the circuit conduction.

[0039] When the socket slider 3 moves outward to reset, it can release the pressure on the push rod sleeve 41, and the bottom end of the push rod 42 can be lifted under the elastic force of the switch spring 24 and the switch isolation pad 51. After the spring end and the switch isolation pad 51 are elastically reset, the spring silver contact on the spring end will disengage from the contact of the silver contact on the power-connecting PCB board 6, thereby realizing the circuit power-off.

[0040] The push rod spring 43, which is located between the push rod sleeve 41 and the limit ring 44, can play a good buffering role. When a standard plug is inserted, that is, when the downward stroke of the socket slider 3 is adapted to the stroke required by the push rod 42 trigger switch spring 24, the push rod spring 43 will be compressed within a suitable range.

[0041] If the downward stroke of the socket slider 3 is greater than or less than the stroke required by the push rod 42 to trigger the switch spring 24, that is, when encountering a non-standard plug or wear, the push rod spring 43 acts as a buffer to compensate for the insufficient stroke or absorb the excess stroke, thereby protecting the switch spring 24 and other related parts and ensuring normal power connection.

[0042] Non-standard plugs are typically handled by using a spring 43 with a higher compression to absorb the excess travel that exceeds that of a standard plug; while worn plugs are typically handled by using a spring 43 with a lower compression to ensure the normal downward movement of the spring 42, compensating for the shortened or non-standard shortened travel of the plug prongs, thereby ensuring normal power connection under different plug conditions.

[0043] To ensure safe use during electrical connection, the isolation assembly 5 includes a switch isolation pad 51 that protrudes arcuately toward the bottom end of the push rod 42, so that the bottom end of the push rod 42 can abut against the switch isolation pad 51.

[0044] During normal operation, regardless of whether a plug is inserted, the bottom end of the push rod 42 can always abut against the switch isolation pad 51 to ensure that the push rod 42 can directly apply the action stroke to the switch isolation pad 51 and the switch spring 24 when it is pressed down, thereby ensuring direct and efficient action linkage.

[0045] After the push rod assembly 4 is freed from the downward pressure of the socket slider 3, the push rod 42 can be lifted by the rebound force of the switch spring 24. At the same time, in order to ensure the reliable lifting of the push rod 42, the switch isolation pad 51 in this application also maintains the arc-shaped protrusion rebound force under normal conditions, which can effectively ensure reliable power disconnection through the dual rebound force of the switch spring 24 and the switch isolation pad 51.

[0046] As described above, by inserting or removing the plug, combined with the guide part on the socket slider 3, the socket slider 3 can be moved at an angle. The guide part includes a top guide wall 32 in the form of an inclined wall at the top of the socket slider 3. The top guide wall 32 can be abutted by the inserted plug prongs and guide the socket slider 3 to move towards the center of the bracket when the plug prongs are inserted.

[0047] In order to reduce the angle at which the translation of the socket slider 3 can press down on the top rod sleeve 41, the socket slider 3 also includes a bottom guide wall 33 in the form of an inclined wall at the bottom of the socket slider 3, and the top rod sleeve 41 can move down along the bottom guide wall 33 during the translation of the socket slider 3.

[0048] Specifically, the top guide wall 32 and the bottom guide wall 33 are inclined in the same direction, and the top guide wall 32 and the bottom guide wall 33 are inclined from top to bottom and outward relative to the insertion direction of the plug prong, so that the socket slider 3 can maintain downward pressure on the top rod assembly 4 during the process of moving towards the middle of the bracket.

[0049] To limit the lifting and lowering movement of the push rod 42, at least a portion of the top end of the push rod 42 is inserted into the bracket top cover 22, which has a limiting hole for inserting the push rod 42. Simultaneously, a through hole is provided on the bracket bottom shell 21 to allow the bottom end of the push rod 42 to be inserted through the internal bracket 2, maintaining a normal abutment relationship on the switch isolation pad 51.

[0050] Based on the above-mentioned installation configuration of the top and bottom ends of the push rod 42, in order to provide space for the installation of the push rod 42 and enable the socket slider 3 to perform translational movement, a clearance groove 34 for avoiding the push rod 42 is provided on the socket slider 3. The clearance groove 34 includes a vertical cut groove opened in the center of the bottom guide wall 33. This configuration allows the push rod 42 to be vertically and flexibly accommodated in the clearance groove 34, while allowing the push rod sleeve 41 to slide at the upper limit on both sides of the bottom guide wall 33 of the clearance groove 34, maintaining the downward pressure relationship on the push rod 42.

[0051] The electric shock protection safety socket in this application includes a two-hole socket and a three-hole socket, and the socket slider 3 includes a corresponding two-hole slider 3a and a three-hole slider 3b.

[0052] The push rod assembly 4 includes two sets of push rod assemblies 4, one for the live wire and one for the neutral wire. The power connection socket 23 includes two sets of power connection sockets 23 and a ground wire power connection socket 23, the two sets of power connection sockets 23 including a live wire power connection socket 23 and a neutral wire power connection socket 23 respectively.

[0053] Specifically, the two-hole sockets correspond to a live wire connection socket 23 and a neutral wire connection socket 23, which respectively correspond to the live wire push rod assembly and the neutral wire push rod assembly.

[0054] The three-hole socket corresponds to a live wire connection socket 23, a neutral wire connection socket 23, and a ground wire connection socket 23. The live wire connection socket 23 and the neutral wire connection socket 23 correspond to the live wire push rod assembly and the neutral wire push rod assembly, respectively.

[0055] The switch spring 24 includes two sets of switch springs 24, namely a live wire switch spring 24 and a neutral wire switch spring 24. The live wire connection socket 23, the live wire push rod assembly and the live wire switch spring 24 are correspondingly arranged. The neutral wire connection socket 23, the neutral wire push rod assembly and the neutral wire switch spring 24 are correspondingly arranged.

[0056] The switch spring 24 is made of high phosphor bronze and has riveted silver contacts. It contacts and separates from the silver contacts on the PCB to connect or disconnect the power supply to the electrical socket 23. Each switch spring 24 corresponds to a neutral or live wire socket.

[0057] The power socket 23 is made of high phosphor bronze. When the plug is inserted, the plug prongs and the power clips 27 of the power socket 23 are in close contact to connect the circuit between the socket and the plug.

[0058] Each power socket 23 has a cylindrical power-connecting copper nail 25 at its bottom. The power-connecting copper nail 25 passes through a round hole on the bracket base 21 and is connected to the root of the switch spring 24 by riveting. At the same time, it clamps the round hole on the bracket base 21. The power-connecting copper nail 25 and the round hole on the bracket base 21 are also tightly configured to provide waterproofing and prevent liquid from entering the socket cavity.

[0059] Correspondingly, the power-connecting PCB board 6 is provided with two live wire silver contacts, two neutral wire silver contacts, three live wire silver contacts, and three neutral wire silver contacts. The ends of the switch springs 24 are respectively riveted to spring silver contacts, and the spring silver contacts are set to correspond to the different silver contacts on the power-connecting PCB board 6.

[0060] A ground copper plate 61 is soldered onto the power-connecting PCB board 6. The ground copper plate 61 is riveted to the power-connecting copper pin 25 on the ground power-connecting socket 23, so that the ground wire is in a normal connected state and the connection of the socket ground wire is stable.

[0061] Through the cooperation of the above-mentioned mechanical linkage structure and electrical connection structure, an effective linkage electrical on / off control effect can be formed to ensure the safety and reliability of the safety socket during use.

[0062] The socket slider 3 includes a two-hole slider 3a corresponding to the two-hole socket. The two-hole slider 3a includes a connecting plate located in the middle. The top guide wall 32 and the bottom guide wall 33 include two sets disposed on both sides of the connecting plate. The two sets of top guide walls 32 and bottom guide walls 33 are respectively disposed corresponding to the plug prongs of the two-hole socket, as well as the live wire push rod assembly and the neutral wire push rod assembly.

[0063] Specifically, the top guide wall 32 can simultaneously abut and cooperate with the prongs of the two-hole plug, and the bottom guide wall 33 can simultaneously allow the push rod sleeves 41 of the live wire push rod assembly and the neutral wire push rod assembly to slide together.

[0064] The two ends of the return spring 31 abut against the connecting plate and the internal bracket 2, and can control the two hole sliders 3a to move during the plug insertion and removal process.

[0065] The two-hole slider 3a acts as a safety baffle to prevent small objects from entering the socket. When the switch activates the socket slider 3 and the plug is inserted, the two metal prongs of the plug (live and neutral wires) will push the socket slider 3 to move. The bottom guide wall 33 on the socket slider 3 will simultaneously press down the two sets of push rod assemblies 4. The push rod 42 passes through the through hole on the bracket bottom shell 21 and pushes against the switch isolation pad 51 and the switch spring 24, so that the silver contact on the end of the spring contacts the silver contact on the PCB board, thereby achieving the purpose of connecting the power supply.

[0066] When the plug is unplugged, the return spring 31 pushes the socket slider 3 back, and at the same time, the push rod assembly 4 rises under the elastic action of the switch isolation pad 51, and the switch spring 24 also springs back to its original position, thereby breaking the contact with the silver contacts on the PCB and disconnecting the power supply.

[0067] The socket slider 3 also includes a three-hole slider 3b corresponding to the three-hole socket, the top guide wall 32 includes a set corresponding to the ground wire plug, and the bottom guide wall 33 includes two sets corresponding to the neutral wire and the live wire respectively. Specifically, one set of top guide walls 32 is corresponding to the ground wire plug of the three-hole plug, and the two sets of bottom guide walls 33 are corresponding to the live wire push rod assembly and the neutral wire push rod assembly respectively.

[0068] The top guide wall 32 can abut against the grounding plug of the three-hole plug, and the bottom guide wall 33 can simultaneously allow the push rod sleeve 41 of the live wire push rod assembly and the neutral wire push rod assembly to slide.

[0069] The two ends of the return spring 31 abut against the three-hole slider 3b and the internal support 2, and can control the three-hole slider 3b to move during the plug insertion and removal process.

[0070] The three-hole slider 3b also acts as a safety baffle, preventing small objects from entering the socket. When the switch activates the socket slider 3, and the three-prong plug is inserted, the metal prong of the plug's ground wire pushes the socket slider 3 to move. The bottom guide wall 33 on the socket slider 3 simultaneously presses down two sets of push rod assemblies 4. The push rod 42 passes through the through hole on the bracket bottom shell 21 and pushes against the switch isolation pad 51 and the switch spring 24, thereby making the silver contact at the end of the spring contact with the silver contact on the PCB board, achieving the purpose of connecting the power. When the plug is unplugged, the process of disconnecting the power is the same as that of the two-hole slider 3a.

[0071] Starting from the limiting lifting and lowering angle of the push rod assembly 4, in order to ensure that the push rod 42 can be lifted under the rebound force of the switch isolation pad 51, the push rod sleeve 41 and the push rod 42 are fitted with a clearance. The top end of the push rod 42 extends out of the push rod sleeve 41 and is limited to pass through the relief groove 34 of the socket slider. At the same time, the top end of the push rod 42 is limited to pass through the limiting hole on the bracket top cover 22, which can effectively prevent the push rod 42 from deviating during lifting and lowering.

[0072] The push rod sleeve 41 includes an engineering step 45. The top end of the push rod spring 43 abuts against the engineering step 45, and the bottom end abuts against the annular flat wall of the limiting ring 44, which can ensure that the push rod spring 43 provides relatively stable and reliable reset and buffering.

[0073] The bracket base 21 is provided with a through hole for the limit insertion of the top rod 42. The bottom end of the top rod 42 extends outward from the through hole, so that the bottom end of the top rod 42 can maintain a normal contact with the switch isolation pad 51. At the same time, it can form a good limit at the bottom of the top rod 42, ensuring that it can perform effective and reliable lifting and lowering actions in the vertical direction.

[0074] Based on the fact that the switch isolating pad 51 has an arc-shaped protrusion towards the bottom end of the push rod 42 in its normal elastic state without pressure, in order to ensure that the push rod 42 can maintain a reliable contact with the switch isolating pad 51, the bottom end of the push rod 42 includes an abutting arc surface 46, the abutting arc surface 46 abuts against the top of the switch isolating pad 51, the switch isolating pad 51 includes an elastic gasket made of silicone rubber, and an arc-shaped groove 26 is provided on the bottom wall of the bracket base 21.

[0075] Specifically, the switch isolation pad 51 is cut from a high-temperature resistant silicone rubber sheet and installed in the arc-shaped groove 26 on the bottom wall of the bracket base 21. The isolation assembly 5 also includes a switch isolation frame 52 made of fireproof material, which is located at the bottom of the internal bracket 2. The top of the switch isolation frame 52 is provided with an arc-shaped protruding top edge 53.

[0076] The switch isolation pad 51 cooperates with the same raised top edge on the switch isolation bracket 52, which can bend the originally flat switch isolation pad 51 into an arc shape, increasing the positive rebound function of the silicone pad and facilitating switch reset.

[0077] Cutting the original sheet maintains the original stability of the high-temperature resistant silicone rubber material, avoids damage to the material properties caused by secondary hot-melt molding, and extends the service life of the parts.

[0078] For deformed installations with curved protrusions, the elasticity of the soft rubber material has been enhanced to ensure that it can still return to its normal position after long-term use.

[0079] The switch isolation pad 51 is pressed between the arc-shaped groove 26 and the arc-shaped protrusion top edge 53, which can maintain the arc-shaped protrusion state of the switch isolation pad 51 in the pressed state. After the switch isolation pad 51 is pressed, it plays a waterproof role, ensuring that liquids and dust cannot enter the inner cavity of the socket internal bracket 2, and ensuring the normal operation and service life of the internal switch and electronic components.

[0080] The switch isolation frame 52 is disposed between the internal support 2 and the power-connecting PCB board 6, and the end of the switch spring 24 is disposed inside the switch isolation frame 52. The switch isolation frame 52 includes multiple compartments, with the end of each switch spring 24 correspondingly set in a different compartment. Each compartment has a raised baffle at the bottom, which can be tightly fitted to the power-connected PCB board 6 to isolate each switch.

[0081] The raised enclosure on the back of the switch isolation bracket 52 can fit tightly against the power-connecting PCB board 6, isolating each switch, that is, each switch spring 24, thus preventing the electric arc generated at the moment of contact of the silver contacts of the switch spring 24 from damaging the surrounding parts and avoiding the possibility of leakage and short circuit.

[0082] The power-connecting PCB board 6 is fixed to the bracket base 21 by a screw 63 and is tightly fitted to the switch isolation bracket 52. The power-connecting PCB board 6 is provided with a ground wire hole, which is soldered to the ground wire copper sheet 61.

[0083] The power-connecting PCB board 6 also has a wiring sleeve 62 for connecting external power lines, as well as relays, current transformers, communication modules, and electronic components soldered on it.

[0084] The rear cover 12 of the housing is provided with a raised shell 15. The wiring sleeve 62 for connecting the external power cord is located inside the raised shell 15. The wiring sleeve 62 specifically includes a neutral wire wiring sleeve 62, a live wire wiring sleeve 62, and a ground wire wiring sleeve 62. The different wiring sleeves 62 are connected to the power PCB board 6 and lock the wire connector. Power is supplied to the socket through the contact of the four silver contacts with the switch spring 24.

[0085] The current transformer and communication module collect, analyze and calculate the incoming and outgoing current data, automatically or passively switch or limit the power supply to the socket, and communicate with the platform or mobile terminal through communication methods such as the Internet of Things to receive control information.

[0086] A wiring port 16 is provided on the raised shell 15, and a safety cover 17 is detachably connected to the wiring port 16. After locking the external power cord, the safety cover 17 is closed to prevent accidental contact by human hands and to prevent the socket from coming into contact with other conductive objects in the wall when it is inserted into the wall, thereby avoiding the risk of leakage or electric shock accidents.

[0087] The electric shock protection safety socket in this application can minimize the risk of electric shock. At the same time, it can trigger the internal electrical connection mechanism through the mechanical action of plug insertion, thereby realizing the active electric shock protection function of no power supply without insertion and ensuring the stability and reliability of the power supply process.

[0088] During use, in the initial state where the plug is not inserted, the socket slider 3 is in the initial position outside the socket on both sides under the action of the return spring 31.

[0089] Under the action of the push rod spring 43, the push rod sleeve 41 maintains abutment with the bottom guide wall 33 of the socket slider 3. Under the action of the double upward convex elastic force of the switch isolation pad 51 and the switch spring 24, the bottom abutment arc surface 46 of the push rod 42 abuts against the arc-shaped top wall of the switch isolation pad 51.

[0090] At this time, the end of the switch spring 24 is pushed upward, separating it from the corresponding silver contact on the power-connecting PCB board 6, and the entire circuit is in an open state, with no power to the socket.

[0091] When a two-prong plug is inserted, both the live and neutral prongs are inserted into the socket simultaneously. When a three-prong plug is inserted, the ground prong is inserted into the socket first.

[0092] The insert first contacts the top guide wall 32 of the socket slider 3. Due to the inclined surface, the downward insertion force of the insert is converted into a force that causes the socket slider 3 to move inward towards the center. The socket slider 3 overcomes the elastic force of the return spring 31 and begins to move. As the socket slider 3 moves, the inclined bottom guide wall 33 at its bottom presses against the push rod sleeve 41. The push rod sleeve 41 is compressed, compressing the push rod spring 43 on one hand, and moving downward along the bottom guide wall 33 on the other. The downward movement of the push rod sleeve 41 causes the entire push rod assembly 4 to move downward, and the bottom end of the push rod 42 presses downward against the switch isolating pad 51.

[0093] The elastic material switch isolating pad 51 deforms under the pressure of the push rod 42, pressing down on the end of the switch spring 24.

[0094] Due to its own elasticity, the end of the switch spring 24, carrying the silver contact, moves downward and makes close contact with the corresponding silver contact on the power-connecting PCB board 6, thus connecting the circuit.

[0095] At the same time, after the plug prongs are moved into position by the socket slider 3, they can reliably contact the power clips 27 on the power connection sleeve 23 to complete the power connection.

[0096] During the process of unplugging the plug, the return spring 31 pushes the socket slider 3 back to the initial position. During the translational reset of the socket slider 3, the pressure of its bottom guide wall 33 on the push rod sleeve 41 is released, and the push rod spring 43 pushes the push rod sleeve 41 back to the initial position. At the same time, the push rod 42 resets upward under the reset elastic force of the switch isolation pad 51 and the switch spring 24.

[0097] The switch isolation pad 51 returns to its original shape due to its own elasticity, and the end of the switch spring 24 tilts upward, separating it from the silver contact on the power-connecting PCB board 6, and the circuit is quickly cut off.

[0098] This invention achieves a safe nature of no insertion and no power supply through a mechanical linkage mechanism of plug insertion, slider movement, top rod 42 pressing down, switch isolation pad 51 deformation, and switch spring 24 connection, which greatly improves safety.

[0099] In this application, a waterproof switch isolation pad 51 is provided between the push rod assembly 4 and the switch spring 24. The switch isolation pad 51 is tightly pressed between the arc-shaped groove 26 of the internal bracket 2 and the arc-shaped protrusion top edge 53 of the switch isolation frame 52 in an arc-shaped bending state. This allows the flat silicone sheet to be bent into an arc-shaped silicone sheet through the pressing fit between the arc-shaped groove 26 and the arc-shaped protrusion top edge 53, and to make close contact with the main body. On the one hand, this can effectively prevent liquid substances from entering the socket. On the other hand, the tension of the silicone sheet can assist the switch push rod assembly 4 to return to its original position.

[0100] The safety socket in this application can effectively isolate live parts from the outside world. When no plug is inserted, the internal switch is in the off state, and the live socket 23 inside the socket is not live. If other conductive objects are inserted or water or other conductive liquids enter the socket, no electric shock or leakage accident will occur.

[0101] When the plug is inserted, the internal silver contacts only connect to the power supply after the plug prongs have made full contact with the power socket 23. Therefore, no electric arc or spark will be generated between the power socket 23 and the plug prongs. Furthermore, the internal silver contacts are located in a completely enclosed cavity, which can maximize the safety performance of the socket.

[0102] It should be noted that, where there is no conflict, the features in the embodiments of this application can be combined with each other.

[0103] The above description is merely a preferred embodiment of this application and is not intended to limit this application. Various modifications and variations can be made to this application by those skilled in the art. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this application should be included within the protection scope of this application.

Claims

1. A safety socket designed to prevent electric shock, characterized in that, The device includes a socket housing and an internal support, wherein a movable socket slider is provided in the internal support, and a return spring is provided between the socket slider and the internal support. The lower part of the socket slider is provided with a power connection sleeve, which is fixedly installed in the internal bracket. The side of the power connection sleeve is provided with a liftable top rod assembly, which is located below the socket slider and can move up and down during the translation of the socket slider. Below the top rod assembly, there is an isolation component and a switch spring. At the bottom of the power-connecting socket, there is a power-connecting copper nail. The power-connecting copper nail extends outward from the internal bracket. The root of the switch spring is riveted to the power-connecting copper nail, and the end of the spring is positioned above the power-connecting PCB board. The push rod assembly includes a push rod sleeve, a push rod, a push rod spring, and a limiting ring. The push rod sleeve is press-fitted into the lower part of the socket slider and movably sleeved on the push rod. The limiting ring is integrally connected to the push rod. The push rod spring is disposed between the push rod sleeve and the limiting ring. The isolation assembly includes a switch isolation pad that protrudes arcuately toward the bottom end of the push rod, so that the bottom end of the push rod abuts against the switch isolation pad.

2. The electric shock-proof safety socket according to claim 1, characterized in that, The socket slider includes a top guide wall with an inclined surface, the top guide wall being able to abut against the inserted plug prongs and guide the socket slider to translate as the plug prongs are inserted; The socket slider also includes a bottom guide wall with an inclined surface, and the top rod sleeve can be pressed down and moved along the bottom guide wall during the translation of the socket slider; The top guide wall and the bottom guide wall have the same inclination direction, and the top guide wall is inclined from top to bottom and outward relative to the insertion direction of the plug prongs. The socket slider is provided with a clearance groove for avoiding the top rod. The clearance groove includes a vertical cut groove opened in the center of the bottom guide wall. The top of the top rod is inserted into the top of the internal bracket. The bracket top cover of the internal bracket is provided with a limiting hole for the top rod to be inserted.

3. The electric shock-proof safety socket according to claim 2, characterized in that, The electric shock safety socket includes two sockets, the socket slider includes two corresponding sliders, the two sliders include a connecting plate, the top guide wall and the bottom guide wall include two sets on both sides of the connecting plate, respectively corresponding to the neutral wire and the live wire, and the two ends of the return spring abut against the connecting plate and the internal support.

4. The electric shock-proof safety socket according to claim 3, characterized in that, The electric shock safety socket also includes a three-hole socket, the three-hole socket includes a corresponding three-hole slider, the top guide wall includes a set corresponding to the ground wire plug, the bottom guide wall includes two sets corresponding to the neutral wire and the live wire respectively, and the two ends of the return spring abut against the three-hole slider and the internal bracket.

5. The electric shock-proof safety socket according to claim 3, characterized in that, The push rod assembly includes two sets of push rod assemblies, including a live wire push rod assembly and a neutral wire push rod assembly respectively; The power connection socket includes two sets of power connection sockets and a ground wire power connection socket. The two sets of power connection sockets respectively include a live wire power connection socket and a neutral wire power connection socket. The switch spring includes two sets of switch springs, including a live wire switch spring and a neutral wire switch spring respectively; The live wire connection socket, the live wire push rod assembly, and the live wire switch spring are correspondingly arranged. The neutral wire connection socket, the neutral wire push rod assembly, and the neutral wire switch spring are correspondingly arranged. A ground copper sheet is soldered onto the power connection PCB board. The ground copper sheet is riveted to the power connection copper nail on the ground wire connection socket.

6. The electric shock-proof safety socket according to claim 3, characterized in that, The power-connecting PCB board is provided with two live wire silver contacts, two neutral wire silver contacts, three live wire silver contacts, and three neutral wire silver contacts. The ends of the switch springs are respectively riveted to spring silver contacts, and the spring silver contacts are set to correspond to the different silver contacts on the power-connecting PCB board.

7. The electric shock-proof safety socket according to claim 3, characterized in that, The push rod sleeve is clearance-fitted with the push rod, and the top end of the push rod extends out of the push rod sleeve and is limited to pass through the relief groove of the socket slider; The push rod sleeve includes an engineering step, the top end of the push rod spring abuts against the engineering step, and the bottom end abuts against the annular flat wall of the limiting ring.

8. The electric shock-proof safety socket according to claim 3, characterized in that, The internal support includes a support base shell, on which a through hole is provided for the insertion of the top rod, and the bottom end of the top rod extends outward from the through hole; The bottom end of the top rod includes an abutting arc surface, which abuts against the top of the switch isolation pad. The switch isolation pad includes an elastic gasket made of silicone rubber, and an arc-shaped groove is provided on the bottom wall of the bracket base. The isolation assembly also includes a switch isolation frame made of fireproof material disposed at the lower part of the internal support, and the top of the switch isolation frame is provided with an arc-shaped protruding top edge; The switch isolation pad is press-fitted between the arc-shaped groove and the top edge of the arc-shaped protrusion.

9. The electric shock-proof safety socket according to claim 8, characterized in that, The switch isolation frame is disposed between the internal support and the power-connecting PCB board, and the end of the switch spring is disposed inside the switch isolation frame; The switch isolation frame includes multiple compartments, with the end of each switch spring corresponding to a different compartment. Each compartment has a raised baffle at its bottom, which can be tightly fitted to the power-connecting PCB board to isolate each switch.

10. The electric shock-proof safety socket according to claim 3, characterized in that, The socket housing includes a front cover and a rear cover. A front waterproof pad is provided between the front cover and the internal support, and a rear waterproof pad is provided between the rear cover and the power-connecting PCB board. The rear cover of the housing is provided with a raised shell, and a wiring sleeve for connecting an external power cord is provided inside the raised shell. The wiring sleeve is connected to the power-connecting PCB board. The raised shell is provided with a wiring port, and a safety cover is detachably connected to the wiring port.

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